| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 399.25 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.44 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.44 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | 90% | MT | 392.38 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.01 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 392.38 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1037.01 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.44 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.44 | USD | 20250819 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 462.45 | USD | 20250819 |